As part of a company that delivers water every day through millions of faucets worldwide, Delta provides a lifetime limited warranty on all parts to the original consumer. Delta is committed to providing you the best experience with water. Another way that Delta is more than just a faucet. For use with Delta shower faucets 2 1/2-inch outside diameter Made of metal Versatile design easily coordinates with many decor styles Brilliance Polished Brass Brilliance finish which resists abrasions and discolorations better than traditional brass or even chrome